Nick Kyrgios recovered from two sets to one down against Steve Darcis to pull Australia level at 1-1 in the Davis Cup semi-final against Belgium.
The 22-year-old world number 20 won 6-3 3-6 6-7 (5-7) 6-1 6-2 in three hours 36 minutes on clay in Brussels.
Earlier in the day, Belgian number one David Goffin beat John Millman 6-7 (4-7) 6-4 6-3 7-5.
In the other semi-final Serbia, who are without Novak Djokovic and Viktor Troicki, are level with France at 1-1.
Playing the nine-time champions away from home, 2010 winners Serbia are underdogs to progress, but world number 80 Dusan Lajovic made up 58 ranking spots on Lucas Pouille to win 6-1 3-6 7-6 (9-7) 7-6 (7-5).